Aerosol-generating substrate and aerosol-generating system

Abstract

The invention discloses an aerosol generating substrate and an aerosol generating system. The aerosol generating substrate comprises 2-hydroxyacetone and propylene glycol. According to the application, the 2-hydroxyacetone is added into the aerosol generating substrate and replaces part of propylene glycol in the aerosol generating substrate, so that the particle size of the aerosol generated by atomization can be effectively increased, the release of formaldehyde is reduced, and the safety problem of heating atomization of the aerosol generating substrate in related technologies is improved; meanwhile, the 2-hydroxyacetone is used as a natural humectant, so that the dryness of the aerosol can be reduced, the moist feeling of the aerosol can be improved, the keto-sweet feeling can be increased, and the use experience of a user can be improved.

Description

Technical Field

[0001] The present application relates to the field of atomization technology, and in particular to an aerosol generating substrate and an aerosol generating system. Background Art

[0002] In the related art, with the rapid development of electronic atomization devices, propylene glycol and glycerol are widely used as smoke-generating agents in the aerosol-generating matrix of electronic atomization devices.

[0003] However, the relevant aerosol generating matrix is ​​prone to release formaldehyde during the heating and atomization process, which can irritate the user's respiratory tract and damage the lung mucosa, resulting in safety issues with the aerosol generated by atomization. Moreover, during the atomization process of the aerosol generating matrix, the aerosol generated by atomization is relatively dry, which causes a strong feeling of dryness in the user's throat when inhaling, affecting the user's experience. Summary of the invention

[0004] The present application mainly provides an aerosol generating substrate and an aerosol generating system to improve the safety and dryness problems of heating and atomizing the aerosol generating substrate in the related art, improve the taste of the aerosol, and enhance the user experience.

[0005] In order to solve the above technical problems, a technical solution adopted in the present application is: providing an aerosol generating substrate, wherein the aerosol generating substrate includes 2-hydroxyacetone and propylene glycol.

[0006] In some embodiments, the mass of the 2-hydroxyacetone accounts for 5%-20% of the mass of the aerosol-generating substrate.

[0007] In some embodiments, the aerosol-generating base further comprises glycerol, nicotine salt, and Virginia extract.

[0008] In some embodiments, the mass of the glycerol accounts for 35%-45% of the mass of the aerosol-generating substrate.

[0009] In some embodiments, the mass of the nicotine salt accounts for 2.5%-4.5% of the mass of the aerosol-generating substrate.

[0010] In some embodiments, the mass of the Virginia extract comprises 1.5%-2.5% of the mass of the aerosol-forming substrate.

[0011] In some embodiments, the mass of the propylene glycol accounts for 24.5%-49.5% of the mass of the aerosol-generating substrate.

[0012] In some embodiments, the aerosol-generating matrix includes 40% by weight glycerol, 3.5% by weight nicotine salt, 2% by weight Virginia extract, 10% by weight 2-hydroxyacetone, and 44.5% by weight propylene glycol.

[0013] To solve the above technical problems, another technical solution adopted in the present application is: to provide an aerosol generating system, comprising an electronic atomization device and any aerosol generating substrate as described above, wherein the electronic atomization device is configured to atomize the aerosol generating substrate to generate an aerosol.

[0014] In some embodiments, the electronic atomization device includes a liquid storage chamber and a heating element, wherein the liquid storage chamber is used to store the aerosol generating substrate, and the heating element is used to heat and atomize the aerosol generating substrate to generate an aerosol.

[0015] The beneficial effects of the present application are as follows: Different from the related art, the present application discloses an aerosol generating matrix and an aerosol generating system, wherein the aerosol generating matrix includes 2-hydroxyacetone and propylene glycol. The present application can effectively increase the particle size of the aerosol generated by atomization, reduce the release of formaldehyde, improve the safety problem of heating and atomizing the aerosol generating matrix in the related art, and improve the safety of heating and atomizing the aerosol generating matrix. At the same time, 2-hydroxyacetone can be used as a natural humectant to reduce the dryness of the aerosol, improve the moistness of the aerosol, increase the sweetness of the ketone, and enhance the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the related technologies are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work, among which:

[0017] Figure 1 It is a schematic diagram of the particle size-particle number concentration distribution results of the aerosol generated by atomization in the control group;

[0018] Figure 2 It is a schematic diagram of the particle size-particle number concentration distribution results of the aerosol generated by atomization in the experimental group. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0020] The terms "first", "second", "third" in the embodiments of the present application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, the features defined as "first", "second", "third" can expressly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device comprising a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] The present application provides an aerosol generating substrate, which can be applied to an aerosol generating system and atomized by an electronic atomization device of the aerosol generating system to generate an aerosol for a user to inhale. Specifically, the aerosol generating substrate is a liquid substrate, and the aerosol generating substrate includes 2-hydroxyacetone and propylene glycol.

[0023] It can be understood that in the present application, by adding 2-hydroxyacetone to the aerosol generating matrix and replacing part of the propylene glycol in the aerosol generating matrix with 2-hydroxyacetone, the particle size of the aerosol generated by atomization can be effectively increased, the release of formaldehyde can be reduced, and the safety issues of heating and atomizing the aerosol generating matrix in the related technology can be improved. At the same time, 2-hydroxyacetone can be used as a natural preservative to reduce the dryness of the aerosol, improve the moistness of the aerosol, increase the ketone sweetness, and enhance the user experience.

[0024] Specifically, the mass of 2-hydroxyacetone accounts for 5%-20% of the mass of the aerosol-generating substrate. For example, the mass of 2-hydroxyacetone can account for any value within the above range, such as 5%, 8%, 10%, 12%, 14%, 15%, 17%, 18%, 20%, etc., of the mass of the aerosol-generating substrate.

[0025] In the present application, 2-hydroxyacetone is used to replace part of the propylene glycol in the aerosol generating matrix, and the mass percentage of 2-hydroxyacetone in the aerosol generating matrix is ​​in the range of 5%-20%, which can more effectively reduce the release of formaldehyde when the aerosol generating matrix is ​​atomized, increase the particle size of the aerosol generated by atomization, and reduce the deposition of the aerosol on the user's lung mucosa, thereby better improving the safety of the aerosol generating matrix atomization, and can also increase the ketone sweetness and moistness of the aerosol generated by atomization, so that the atomization taste is better; at the same time, because 2-hydroxyacetone replaces part of the propylene glycol, the mass percentage of 2-hydroxyacetone in the aerosol generating matrix is ​​in the range of 5%-20%, and the mass percentage of propylene glycol in the aerosol generating matrix is ​​also in a suitable range, which can make the amount of aerosol generated by atomization of the aerosol generating matrix and the amount of aerosol generated by atomization of the existing aerosol generating matrix not much different, ensuring that the aerosol generating matrix atomization generates a sufficient amount of aerosol, thereby ensuring that the aerosol generating matrix has a good smoking effect when atomized.

[0026] Preferably, the mass of 2-hydroxyacetone accounts for 5%-15% of the mass of the aerosol generating matrix, and the aerosol generating matrix has better smoking effect when atomized, higher safety, better ketone sweetness and smoothness, better atomized taste, better satisfaction of the user's smoking experience, and enhanced user's smoking pleasure.

[0027] If the mass percentage of 2-hydroxyacetone in the aerosol generating matrix exceeds the range of 5%-20%, it will affect the effect and taste of the aerosol generated by the aerosol generating matrix atomization. For example, when the mass percentage of 2-hydroxyacetone in the aerosol generating matrix is ​​less than 5%, the content of 2-hydroxyacetone in the aerosol generating matrix is ​​relatively small, and the effect of improving the dryness of the aerosol generated by atomization is relatively weak. The aerosol generated by atomization still has the problem of dryness, and the moistness and sweetness of the aerosol generated by atomization cannot be well improved. Moreover, the content of propylene glycol is still high, and the aerosol generated by atomization still has formaldehyde release, which still irritates the user's respiratory tract and damages the lung mucosa. The particle size of the aerosol generated by atomization cannot be well improved, and it is still easy to deposit on the user's lung mucosa. The safety problem of the aerosol generating matrix during atomization is still not well improved. When the mass percentage of 2-hydroxyacetone in the aerosol generating matrix is ​​greater than 20%, the content of propylene glycol in the aerosol generating matrix will be insufficient, affecting the smoking effect of the aerosol generating matrix, and further making the amount of aerosol generated by atomization of the aerosol generating matrix insufficient, affecting the atomization effect; moreover, if the mass percentage of 2-hydroxyacetone in the aerosol generating matrix is ​​too high, the ketone sweetness and moistness of the aerosol generated by atomization will also be too high, which will also affect the smoking taste, and further affect the user's smoking experience.

[0028] In the present application, the aerosol generating matrix also includes glycerol, nicotine salt and Virginia extract. In some embodiments, the mass of glycerol accounts for 35%-45% of the mass of the aerosol generating matrix. The mass percentage of glycerol is within the range of 35%-45%, which can ensure that the aerosol generating matrix has a good smoking effect when atomizing and generating aerosol. Specifically, the mass of glycerol can account for any value such as 35%, 36%, 37.5%, 38%, 39%, 40%, 41%, 43%, 45% of the mass of the aerosol generating matrix.

[0029] In some embodiments, the mass of nicotine salt accounts for 2.5%-4.5% of the mass of the aerosol-generating matrix. The mass percentage of nicotine salt is within the range of 2.5%-4.5%, which can effectively improve the user's satisfaction when inhaling. Specifically, the mass of nicotine salt can account for any value such as 2.5%, 2.7%, 2.9%, 3%, 3.2%, 3.5%, 3.7%, 3.8%, 3.95%, 4%, 4.2%, 4.3%, 4.5% of the mass of the aerosol-generating matrix.

[0030] In some embodiments, the mass of the Virginia extract accounts for 1.5%-2.5% of the mass of the aerosol-generating matrix. The mass percentage of the Virginia extract in the range of 1.5%-2.5% can effectively improve the aroma of the aerosol generated by atomization of the aerosol-generating matrix, improve the taste of the aerosol, and thus improve the user experience. Specifically, the mass of the Virginia extract can account for any value such as 1.5%, 1.6%, 1.8%, 1.9%, 2%, 2.1%, 2.3%, 2.35%, 2.5% of the mass of the aerosol-generating matrix.

[0031] In some embodiments, the mass of propylene glycol accounts for 24.5%-49.5% of the mass of the aerosol-generating substrate. Specifically, the mass of propylene glycol can account for any value such as 24.5%, 26%, 28%, 30%, 31%, 33.5%, 35%, 37.5%, 40%, 42%, 44%, 46%, 47%, 49.5% of the mass of the aerosol-generating substrate.

[0032] In a specific embodiment, the aerosol-generating matrix includes 40% by mass of glycerol, 3.5% by mass of nicotine salt, 2% by mass of Virginia extract, 10% by mass of 2-hydroxyacetone, and 44.5% by mass of propylene glycol. The safety problem of heating and atomizing the aerosol-generating matrix in the related art can be improved while ensuring the smoking effect, and the safety of heating and atomizing the aerosol-generating matrix can be improved. At the same time, the dryness of the aerosol can be reduced, the moistness and sweetness of the aerosol can be increased, and the user experience can be improved.

[0033] See also Figure 1 to Figure 2 , Figure 1 This is a schematic diagram of the particle size-particle number concentration distribution of the aerosol generated by atomization in the control group. Figure 2 It is a schematic diagram of the particle size-particle number concentration distribution results of the aerosol generated by atomization in the experimental group.

[0034] In order to verify the atomization effect of the aerosol generating matrix of the present application, the inventor of the present application used the aerosol generating matrix provided in one embodiment of the present application as the experimental group, and the aerosol generating matrix in the related technology as the control group, and carried out the same atomization experiment on the two under the same experimental conditions.

[0035] See Table 1, which is a table of the composition ratios of the experimental group and the control group, as follows:

[0036]

[0037] Table 1

[0038] Specifically, as shown in Table 1, the components of the aerosol-generating matrix of the control group include glycerol, nicotine salt, Virginia extract and propylene glycol, wherein the mass of glycerol accounts for 40% of the mass of the aerosol-generating matrix, the mass of nicotine salt accounts for 3.5% of the mass of the aerosol-generating matrix, the mass of Virginia extract accounts for 2% of the mass of the aerosol-generating matrix, and the mass of propylene glycol accounts for 54.5% of the mass of the aerosol-generating matrix. The experimental group uses the aerosol-generating matrix provided by an embodiment of the present application, and the components of the aerosol-generating matrix of the experimental group include glycerol, nicotine salt, Virginia extract, propylene glycol and 2-hydroxyacetone, wherein the mass of glycerol accounts for 40% of the mass of the aerosol-generating matrix, the mass of nicotine salt accounts for 3.5% of the mass of the aerosol-generating matrix, the mass of Virginia extract accounts for 2% of the mass of the aerosol-generating matrix, the mass of propylene glycol accounts for 44.5% of the mass of the aerosol-generating matrix, and the mass of 2-hydroxyacetone accounts for 10% of the mass of the aerosol-generating matrix. That is, the experimental group used 10% by mass of 2-hydroxyacetone to replace 10% of the propylene glycol in the control group.

[0039] After the same atomization experiment was conducted on two groups of aerosol-generating matrices with different compositions, the following results were obtained: Figure 1 and Figure 2 And the experimental results are shown in Tables 2 and 3.

[0040] Specifically, in the aerosol particle size test conducted under the same experimental conditions, the control group did not replace part of the propylene glycol with 2-hydroxyacetone, such as Figure 1 As shown in the figure, the particle number concentration of the aerosol generated by atomization in the control group has three obvious peaks. The particle number concentration of the aerosol particle size corresponding to these three peaks is the largest, that is, the number of aerosol particles of these three particle sizes in the aerosol generated by atomization is the largest. Among them, the aerosol particle size corresponding to the first peak is 0.05μm. Figure 2 As shown, after the experimental group used 10% by mass 2-hydroxyacetone to replace 10% of propylene glycol, the particle number concentration of the aerosol generated by atomization in the experimental group had only two obvious peaks, the peak at the aerosol particle size of 0.05 μm moved backward and merged with the two main peaks, and the number concentration of aerosol particles with a particle size of 0.05 μm in the aerosol generated by atomization decreased.

[0041] The inventors of the present application conducted a comparative analysis of the above experimental results and found that the aerosol generated by the aerosol generation matrix atomization in the experimental group had a reduced number of small-particle aerosol particles and an overall increased aerosol particle size compared to the control group. It can be understood that the smaller the aerosol particle size, the easier it is to deposit on the user's lung mucosa, thereby causing damage and leading to the problem of unsafe aerosols. The aerosol generation matrix of the present application uses 2-hydroxyacetone to replace part of propylene glycol, which can increase the particle size of the aerosol generated by atomization, thereby improving the atomization safety of the aerosol generation matrix.

[0042] See Table 2, which is a comparison table of the total particulate matter corresponding to the number of puffs in the control group and the experimental group, as follows:

[0043]

[0044] Table 2

[0045] Specifically, as shown in Table 2, in the total particular mass test of two groups of aerosol generating matrices with different compositions under the same experimental conditions, the control group did not replace part of the propylene glycol with 2-hydroxyacetone, and when the number of puffs of the user was 1-50, the TPM (total particular mass) of the control group was 7.5 mg / puff, when the number of puffs of the user was 51-100, the TPM of the control group was 5.9 mg / puff, and when the number of puffs of the user was 101-150, the TPM of the control group was 4.7 mg / puff. In the experimental group, 10% by mass of 2-hydroxyacetone was used to replace 10% of propylene glycol. When the number of puffs taken by the user was in the range of 1-50 puffs, the TPM of the experimental group was 8.5 mg / puff. When the number of puffs taken by the user was in the range of 51-100 puffs, the TPM of the experimental group was 6.5 mg / puff. When the number of puffs taken by the user was in the range of 101-150 puffs, the TPM of the experimental group was 4.8 mg / puff.

[0046] The inventors of the present application conducted a comparative analysis of the above experimental results and found that the aerosol generated by the aerosol generation matrix atomization in the experimental group was increased in TPM (total particular mass, total particulate matter) compared with the control group. In the three different ranges of 1-50, 51-100, and 101-150, the total particulate matter of the aerosol generated by the aerosol generation matrix atomization in the experimental group was greater than the total particulate matter of the aerosol generated by the aerosol generation matrix atomization in the control group. Moreover, in the first 50 puffs of the user's puff, the increase in the total particulate matter of the aerosol generated by the aerosol generation matrix atomization in the experimental group was more obvious. The experimental results show that in the present application, by adding 2-hydroxyacetone to the aerosol generation matrix and replacing part of propylene glycol with 2-hydroxyacetone, the total particulate matter of the aerosol generated by the aerosol generation matrix atomization can be increased, the amount of aerosol generated by atomization can be ensured, and it is beneficial to improve the smoking effect of the aerosol generation matrix.

[0047] See Table 3, which is a comparison table of formaldehyde release corresponding to the number of puffs in the control group and the experimental group, as follows:

[0048]

[0049] Table 3

[0050] Specifically, as shown in Table 3, under the same experimental conditions, formaldehyde release tests were conducted on aerosols generated by atomization of two groups of aerosol generating matrices with different compositions. The control group did not replace part of the propylene glycol with 2-hydroxyacetone. When the number of puffs taken by the user was 1-50, the formaldehyde release of the control group was 742 ng / puff. When the number of puffs taken by the user was 51-100, the formaldehyde release of the control group was 1048 ng / puff. When the number of puffs taken by the user was 101-150, the formaldehyde release of the control group was 1151 ng / puff. In the experimental group, 10% by mass of 2-hydroxyacetone was used to replace 10% of propylene glycol. When the number of puffs taken by the user was between 1 and 50, the formaldehyde release of the experimental group was 258 ng / puff. When the number of puffs taken by the user was between 51 and 100, the formaldehyde release of the experimental group was 1046 ng / puff. When the number of puffs taken by the user was between 101 and 150, the formaldehyde release of the experimental group was 1070 ng / puff.

[0051] The inventor of the present application conducted a comparative analysis of the above experimental results and found that the aerosol generated by the aerosol generation matrix atomization in the experimental group had a reduced release of formaldehyde compared to the control group. In the three different ranges of 1-50, 51-100, and 101-150, the release of formaldehyde in the aerosol generated by the aerosol generation matrix atomization in the experimental group was less than the release of formaldehyde in the aerosol generated by the aerosol generation matrix atomization in the control group. Moreover, in the first 50 puffs of the user's suction, the reduction in the release of formaldehyde in the aerosol generated by the aerosol generation matrix atomization in the experimental group was particularly obvious, and the formaldehyde release in the experimental group was significantly reduced. The experimental results show that in this application, by adding 2-hydroxyacetone to the aerosol generation matrix and replacing part of propylene glycol with 2-hydroxyacetone, the release of formaldehyde in the aerosol generation matrix during the heating atomization aerosol generation process can be reduced, reducing the irritation of the user's respiratory tract and the damage to the user's lung mucosa, improving the safety of the aerosol generation matrix during heating atomization, and improving the user experience.

[0052] The inventors of the present application used two different aerosol-generating matrices, the experimental group and the control group, for heating and atomization under the same experimental conditions, and inhaled the aerosols generated by atomization and conducted a sensory comparison. After the sensory comparison, it was found that the aerosol generated by atomization of the aerosol-generating matrix of the control group had a drier mouthfeel, and the aftertaste when the aerosol was inhaled was slightly bitter, while the aerosol generated by atomization of the aerosol-generating matrix of the experimental group had a moist mouthfeel, and the aerosol had a ketone sweetness, and the aftertaste when the aerosol was inhaled was comfortable. After sensory comparison, it was found that in the present application, by adding 2-hydroxyacetone to the aerosol generating matrix, 2-hydroxyacetone is used as a natural ketose, and 2-hydroxyacetone replaces part of propylene glycol, so that the ketone sweetness of the aerosol generated by atomization of the aerosol generating matrix can be increased, and the bitterness can be reduced. In addition, 2-hydroxyacetone can act as a natural preservative, improve the moisturizing effect of the aerosol generated by atomization, make the aerosol generated by atomization more moist, reduce the dryness of the aerosol, and improve the mouthfeel of the aerosol generated by atomization, thereby improving the dryness of the throat when the user inhales, enhancing the user's sense of pleasure when inhaling, and thus improving the user experience.

[0053] The present application also provides an aerosol generating system, which includes an electronic atomization device and an aerosol generating substrate in any of the above embodiments, and the electronic atomization device is configured to atomize the aerosol generating substrate to generate an aerosol.

[0054] In some embodiments, the electronic atomization device includes a liquid storage chamber and a heating element, the liquid storage chamber is used to store the aerosol-generating substrate, the heating element is in fluid communication with the liquid storage chamber, and the heating element is used to heat the atomized aerosol-generating substrate to generate an aerosol for the user to inhale. In other embodiments, the electronic atomization device may not include a liquid storage chamber, and an independent liquid storage device is provided outside the electronic atomization device, and the heating element of the electronic atomization device is in fluid communication with the liquid storage device, so that the heating element of the electronic atomization device can heat the atomized aerosol-generating substrate to generate an aerosol.

[0055] In some embodiments, the electronic atomization device may also be an ultrasonic atomization device, which atomizes the aerosol-generating matrix to generate an aerosol through high-frequency oscillation.

[0056] In some embodiments, the electronic atomization device may also be a spray device, which generates an aerosol by atomizing an aerosol-generating substrate by spraying.

[0057] It should be noted that the specific structure of the above-mentioned electronic atomization device can refer to the relevant technology, and this application will not elaborate on it here.

[0058] The present application discloses an aerosol generating matrix and an aerosol generating system, wherein the aerosol generating matrix includes 2-hydroxyacetone and propylene glycol. The present application adds 2-hydroxyacetone to the aerosol generating matrix, and replaces part of the propylene glycol in the aerosol generating matrix with 2-hydroxyacetone, so as to effectively increase the particle size of the aerosol generated by atomization, reduce the release of formaldehyde, improve the safety problem of heating and atomizing the aerosol generating matrix in the related technology, and improve the safety of heating and atomizing the aerosol generating matrix. At the same time, 2-hydroxyacetone can be used as a natural humectant to reduce the dryness of the aerosol, improve the moistness of the aerosol, increase the sweetness of the ketone, and enhance the user experience.

[0059] The above descriptions are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An aerosol generating substrate, characterized in that The aerosol-forming substrate includes 2-hydroxyacetone and propylene glycol.

2. The aerosol-generating substrate according to claim 1, characterized in that The mass of the 2-hydroxyacetone accounts for 5% to 20% of the mass of the aerosol generating substrate.

3. The aerosol-generating substrate according to claim 2, characterized in that The aerosol-forming base also includes glycerol, nicotine salt and Virginia extract.

4. The aerosol-generating substrate according to claim 3, characterized in that The mass of the glycerol accounts for 35%-45% of the mass of the aerosol generating substrate.

5. The aerosol-generating substrate according to claim 3, characterized in that The mass of the nicotine salt accounts for 2.5%-4.5% of the mass of the aerosol generating substrate.

6. The aerosol-generating substrate according to claim 3, characterized in that The mass of the Virginia extract accounts for 1.5% to 2.5% of the mass of the aerosol-forming substrate.

7. The aerosol-generating substrate according to claim 3, characterized in that The mass of the propylene glycol accounts for 24.5% to 49.5% of the mass of the aerosol generating substrate.

8. An aerosol-generating substrate according to any one of claims 3 to 7, characterized in that The aerosol-generating matrix comprises 40% by weight of glycerol, 3.5% by weight of nicotine salt, 2% by weight of Virginia extract, 10% by weight of 2-hydroxyacetone and 44.5% by weight of propylene glycol.

9. An aerosol generating system, characterized in that: It comprises an electronic atomization device and an aerosol generating substrate as described in any one of claims 1 to 8, wherein the electronic atomization device is configured to atomize the aerosol generating substrate to generate an aerosol.

10. An aerosol generating system according to claim 9, characterized in that The electronic atomization device comprises a liquid storage chamber and a heating element, wherein the liquid storage chamber is used to store the aerosol generating substrate, and the heating element is used to heat and atomize the aerosol generating substrate to generate an aerosol.

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